Indroduction
... The chemical and spectro-photometric aspect are investigated by means of the so-called Evolutionary Population Synthesis (EPS) originally due to Tinsley (1978) (see Tinsley (1980a), and Bruzual (1993) for review), and since then used by many authors (see below for complete referencing). The great ad ...
... The chemical and spectro-photometric aspect are investigated by means of the so-called Evolutionary Population Synthesis (EPS) originally due to Tinsley (1978) (see Tinsley (1980a), and Bruzual (1993) for review), and since then used by many authors (see below for complete referencing). The great ad ...
on the nature of the dust in the debris disk around hd 69830
... models were motivated by the single-temperature distributions found for many of the objects studied by Beichman et al. (2006a) and Chen et al. (2006), as well as the narrow dust structures found in many of the Hubble Space Telescope images of debris disks ( Kalas et al. 2005, 2006). We find that onl ...
... models were motivated by the single-temperature distributions found for many of the objects studied by Beichman et al. (2006a) and Chen et al. (2006), as well as the narrow dust structures found in many of the Hubble Space Telescope images of debris disks ( Kalas et al. 2005, 2006). We find that onl ...
Physics of the Interstellar and Intergalactic Medium
... spacecraft to collect them for study. How large a collecting area A should this spacecraft have in order to have an expected collection rate of 1 interstellar grain per hour? Neglect the motion of the spacecraft relative to the Sun, and assume that the interstellar grains are unaffected by solar gra ...
... spacecraft to collect them for study. How large a collecting area A should this spacecraft have in order to have an expected collection rate of 1 interstellar grain per hour? Neglect the motion of the spacecraft relative to the Sun, and assume that the interstellar grains are unaffected by solar gra ...
Orbitally stable states in generalized Hartree-Fock theory
... γ = i≥1 ni |ui ihui | . When only a finite number of eigenvalues is non-zero, the operator is of finite rank. We shall say that it describes a pure state when all nonzero occupation numbers are equal to 1, i.e. γ is an orthogonal projector. Minimizers of the Hartree-Fock model are of this form, but ...
... γ = i≥1 ni |ui ihui | . When only a finite number of eigenvalues is non-zero, the operator is of finite rank. We shall say that it describes a pure state when all nonzero occupation numbers are equal to 1, i.e. γ is an orthogonal projector. Minimizers of the Hartree-Fock model are of this form, but ...
The Scale of the Cosmos
... • Although stars are roughly the same size as the sun, they are so far away that you cannot see them as anything but points of light, even with the largest telescopes on Earth. – Using indirect methods, astronomers have found nearly 200 planets orbiting other stars. ...
... • Although stars are roughly the same size as the sun, they are so far away that you cannot see them as anything but points of light, even with the largest telescopes on Earth. – Using indirect methods, astronomers have found nearly 200 planets orbiting other stars. ...
Deneb - Emmi
... brightest star in the universe, and one of the most well known stars in our very own Milky Way. ...
... brightest star in the universe, and one of the most well known stars in our very own Milky Way. ...
A Second Luminous Blue Variable in the Quintuplet Cluster
... spectra, apart from interstellar absorption bands (Okuda et al. 1990). Others are not enshrouded and show line absorption and emission from their photospheres and winds. Cotera et al. (1996) and Figer et al. (1998, hereafter F98) have demonstrated that one such object, originally reported as object ...
... spectra, apart from interstellar absorption bands (Okuda et al. 1990). Others are not enshrouded and show line absorption and emission from their photospheres and winds. Cotera et al. (1996) and Figer et al. (1998, hereafter F98) have demonstrated that one such object, originally reported as object ...
TOWARD A MODEL FOR THE Be BINARY SYSTEM PER 1
... immediately seen that it is probably non-Keplerian and shows the influence of gaseous motion within the system. The points plotted are the means of individual observational points and in this process of forming the normal points, the quite considerable scatter for such sharp features is masked. The ...
... immediately seen that it is probably non-Keplerian and shows the influence of gaseous motion within the system. The points plotted are the means of individual observational points and in this process of forming the normal points, the quite considerable scatter for such sharp features is masked. The ...
L103 A NEW MILKY WAY DWARF SATELLITE IN CANES
... of the Milky Way. Together with the two dwarf irregulars (the Large and Small Magellanic Clouds), these make up all the known satellite galaxies of the Milky Way. The dSphs have such low surface brightness that they have often been found serendipitously. For example, while Sextans (Irwin et al. 1990 ...
... of the Milky Way. Together with the two dwarf irregulars (the Large and Small Magellanic Clouds), these make up all the known satellite galaxies of the Milky Way. The dSphs have such low surface brightness that they have often been found serendipitously. For example, while Sextans (Irwin et al. 1990 ...
Astronomy Astrophysics Excitation of solar-like oscillations across the HR diagram &
... (1999) have calculated expected values of Vmax , the maximum oscillation amplitudes, for different solar-like oscillating stars. Their calculations, based on a simplified excitation model, imply that Vmax of solar-type oscillations scale as (L/M)1.5 where L and M are the luminosity and mass of the st ...
... (1999) have calculated expected values of Vmax , the maximum oscillation amplitudes, for different solar-like oscillating stars. Their calculations, based on a simplified excitation model, imply that Vmax of solar-type oscillations scale as (L/M)1.5 where L and M are the luminosity and mass of the st ...
Heating and Cooling of Neutron Star Crusts
... observed to go through accretion outburst periods followed by long quiescent intervals. These sources offer unique opportunities to probe the interior physics of neutron stars. In order to interpret these observations, accurate models of neutron star crusts are needed. In addition, experiments must ...
... observed to go through accretion outburst periods followed by long quiescent intervals. These sources offer unique opportunities to probe the interior physics of neutron stars. In order to interpret these observations, accurate models of neutron star crusts are needed. In addition, experiments must ...
arXiv:astro-ph/9510089 v1 17 Oct 95
... The above technique is only one of many related methods used to determine Ω on large scales. Another example is the detailed comparison of the peculiar velocities of many galaxies with the detailed maps of δn/n. This should not only determine Ω, but serve as a stringent test for the theory that lar ...
... The above technique is only one of many related methods used to determine Ω on large scales. Another example is the detailed comparison of the peculiar velocities of many galaxies with the detailed maps of δn/n. This should not only determine Ω, but serve as a stringent test for the theory that lar ...
Stellar Metamorphosis
... objects clearing their path for more stable orbits. issue. [9] They just found an older star that is de[27] Mainstream has this process backwards and ionizing its interior and undergoing Marklund is exceedingly clueless because their definitions convection also known as differentiation. [10] ...
... objects clearing their path for more stable orbits. issue. [9] They just found an older star that is de[27] Mainstream has this process backwards and ionizing its interior and undergoing Marklund is exceedingly clueless because their definitions convection also known as differentiation. [10] ...
Time evolution and rotation of starspots on CoRoT
... were observed for this system over a period of 135 days. Aims. Small modulations detected in the optical light curve of the planetary transits are used to study the position, size, intensity, and temporal evolution of the photospheric spots on the surface of the star that are occulted by the planeta ...
... were observed for this system over a period of 135 days. Aims. Small modulations detected in the optical light curve of the planetary transits are used to study the position, size, intensity, and temporal evolution of the photospheric spots on the surface of the star that are occulted by the planeta ...